Anyone replace the springs of a Nobsound footer?

If considering other options, I replaced the springs under my speakers with the larger size of these in the front and use the next size down in the back. Plenty of sizes to match the weight of whatever you are supporting.

Platinum silicone elastomers, act like a damped spring. Lots of mass, good damping and the speaker is free to move around like it did when I had them on springs, but maybe a bit more stable since they are adhered to the bottom of my Sound Anchors stands. These are more spring-like than Herbie’s products, which I also used previously.

I had the same problem. I replaced them with SVS isolation footers. They're amazing. 

Agree with @carlsbad2 and @audphile1 - easier to use more Nobsounds in the front.  You might get it done with a single extra Nobsound in the front-center of each speaker, or by using two of them at each front corner.  If too stiff, you can just remove some of the springs from each to achieve the desired level of spring compression.

I experienced the same issue when sizing single springs to place under my 180 lb. speakers/stands.  Not unusual for the front to be heavier since the speaker drivers, with their heavy magnets, are attached to the front baffle. 

The rocker springs I pulled from a 1990 Buick 3.5L V8 were plenty springy. Your springs will be fine.

Springs lose their tension.

Live Vibe brass decoupler sets are better than any springs out there. 

Springs lose their tension. 

If you want to experiment go to an auto parts store and look @ inexpensive Made in China valve springs (s/b under 1$ each with tax).

This said, it would probably be about the same $ to just double up on the stock footers.

DeKay

https://youtu.be/AChjoG4g2rM?si=DR2hwNs78VSPRttV

Might be easier to just put 2 nobosounds under each corner.  I'm a physicist and have worked a lot with spring constants and it is hard to figure out what springs to buy without buying a lot and trying them. 

You can get springs in a hardware store. Single springs work fine.

Why not just buy another set and use more under the sub. Or just use the feet on the sub as they were intended and don’t waste money on these tweaks. I never cared for these anywhere in my system.